.head {
    height: 800px;
    background-color: pink;
}

.head_son {
    width: 100%;
    height: 70px;
    background-color: aliceblue;
    position: fixed;
    float: right;
    z-index: 9999;
}

.head_son .left {
    height: 100%;
    width: 250px;
    list-style: none;
    /* background-color: black; */
    float: left;
    margin-left: 250px;
}

.head_son .right {
    float: right;
    height: 100%;
    /* width: 800px; */
    margin-right: 180px;
}

.head_son .right ul {
    height: 100%;
}

.head_son .right ul li {
    float: left;
    width: 150px;
    text-align: center;
    line-height: 70px;
    box-sizing: border-box;
}

.head_son .right ul li a {
    display: inline-block;
    width: 100%;
    height: 100%;
}

.head_son .right ul li:hover {
    border-bottom: 3px solid #a8463d;
}


.head_son .left .logo {
    width: 70px;
    float: left;
    height: 100%;
    background: url('../img/logo.png') no-repeat;
    background-size: cover;
}

.head_son .left .text {
    float: left;
    width: 100px;
    text-align: center;
    height: 100%;
    line-height: 70px;
}

#content article {
    width: 340px;
}

.head .body {
    width: 100%;
    height: 100%;
    background: url('../img/四大行当.jpg')no-repeat;
    z-index: 9999;
    background-size: cover;
}